Preserving a tidal mount demands integration of marine processes and medieval fabric care.

1. Diagnostic Toolkit

3D laser scanning of buttresses & spire for deformation baselines.
Salt crystallization sampling on lower ramparts; lab analysis informs cleaning intervals.

2. Stone & Mortar Strategy

Issue	Symptom	Intervention
Granular loss (salt)	Powdery surface	Low-pressure mist washing
Joint decay	Open gaps	Lime mortar repointing (breathable)
Biological growth	Dark staining	Selective biocide application (minimal)

Plant selection controlled to avoid root moisture accumulation against arcade bases; humidity sensors ensure fungal risk stays low.

Periodic water releases reduce sedimentation, reasserting insular appearance—visual authenticity couples with ecological goals.

Heatmaps of staircase occupancy trigger signage repositioning; objective: lower abrasion on vulnerable stair nosings & distribute load.

Climate variability: intense rain events accelerate wash on mortar.
Rising sea-level scenario planning needed for long-term access infrastructure adaptation.

Data-guided, minimally invasive approaches keep the mount authentic while accommodating global visitation pressure.